Hollow pulp article.



No. 768,307. I PATENTED AUG. 23

-J. H. RIVERS. HOLLOW PULP ARTICLE. APPLIOATION FILED AUG. 2

N0 MODEL.

, ful Improvementin Hollow Pulp Articles, of

ticle 45 a more compact article which is the article to'difierent uses.

4 are secured. The

No. 768,307. Patented August 23, 1904.

UNITED ST TES PATENT OFFICE.

.JULIAN H. RIVERS, on ST. LOUIS, MISSOURI, ASSIGNOR To UNITED STATES FIBER STOPPER COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF OUTH DAKOTA.

HOLLOW PULP ARTICLE;

I srncinicn'rron forming part of Letters Patent No. 768,307, dated. August 23, 1904.

Application filed August 20,1903. Serialllo- 110,122. (No model.)

helically disposed, and in addition to To all whbm it may concern: I I sli htly Be'itknown that I, JULIAN H. RIyERs,acitithis the fibers of the different strata lie in zen ofthe United States, residing at St. Louis, planes of a different and opposite pitch. By

Missouri,have invented a certain new and usethis arrangement it is obvious that the crossing of the fibers results in a structure poswhich the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains tonlake and usethe same, reference being had to the ac- I companying drawings, forming part of this specification, in which- I This invention relates. to new and useful improvements in hollow pulp articles designed for use for various purposes, such as packing [5 for bottles, blanks for the manufacture of pulp gaskets, buckets, &c.'

In the drawing I have shown in perspective a hollow pulp article possessing the characteristics of myinvention, the same being shown 2 as anfopen-ended cylinder; but it. is obvious that one .or both ends ofthe cylinder could be closed by inserting endr pieces, if desired, or that one-end can be wholly and the other partially closed integrally by'making provisions- 2 5 for such heads or flanges in the mold; also, that the cross-sectional contour could be changed to suit the taste of the designer in adapting For instance, the article could be polygonal in cross-section or 3 non-circular,' and, furthermore, the article couldbe tapered longitudinally or made in various shapes and forms without departing from thenature and principle of my invention. My. invention consists in a hollow pulp ar wherein the fibers of the pulp lie principally in one direction -to wit, circumferentiallysaid fibers being arranged in superposed layers or strata and built up one uponthe other until the desired thickness and density of a woven article, the fibers interlacmgv with each other in such a manner as to produce by the stratified helices of difierent and opposite pitch a structure which is extremely strong and durable and of such density as conditions for which it is to be used may require.

In the drawing 1 have shown the article as surface or periphery, and 2 the inner surface or periphery, the fibers being being slightly helically disposed. At the end 3 a stratification is represented, the superposed layers of the opposing helices interweaving with each other, so as to make a compact in. tegral structure in the form of a hollow seamless pulp tube.

In applications filed by me of even date herewith, Serial Nos. 170,123 and'172,121, Ihave shown, described, and claimed the apparatus and process. for making hollow pulp articles I possessing the characteristics herein set forth, and therefore if deem it unnecessary to illustrate or describe inthis application any apparatus for manufacturing such an-article.

' Tam aware that minor changes in the construction, arrangemenufand combination of the several parts of my device can be made and substituted for those herein shown and described without in the least departing from "the nature and principle of my invention.

- Having thus described my invention, what Patent, is-, fibers, Whichlieprincipally 1-. An integral hollow pulp article whose in circumferential direction, are also slightly fibers are longitudinally stratified and helically oblique or helically disposed, which is advandisposed; substantially as described. tageous in that the fibers are by this arrange- 2. An integral hollow pulp article whose ment enabled to lie closer together and make fibers are helically disposed in opposite direcnot so sustions; substantially'as described. ceptible to transverse fracture. The fibers, 3. Aninte-gral hollow pulp article,com posed as before stated, are stratified and lie princiof layers of'fiber, the fibers ofeachlayer being pally In a circumferential direction, being sessing characteristics partaking of the nature a pulp cylinder, in which 1 indicates the outer illustrated as 5 I claim as new, and desireto secure by Letters 9 5- helically disposed and havinga different pitch from those of its adjacent layer; substantially In testimony whereof I hereunto afiix my as described. signature, in the presence of two witnesses,

4. An integral hollow pulp article built up of this 13th day of August, 1903. convolutions of superposed layers, fibers in JULIAN H. RIVERS. 5 each layer being helically disposed in an oppo- Witnesses:

site direction from the adjacent layer; sub- GEORGE BAKEWELL, stantially as described. 7 LENORE WILsoN. 

